Fresno police are calling a Sunday Night shooting a “mass-casualty shooting.” 10-people reported shot … with 4 of them killed. Police say the gunman went to a house where nearly 3-dozen people were at a party and opened fire in the backyard. A motive not yet clear and the shooter still on the loose. Fresno P.D. Deputy Chief Michael Reed says the shooting could have been Much worse. The investigation is ongoing.